<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style type="text/css">
        .container {
            /*max-width: 900px;*/
            width: 900px;
        }
        aside {
            /*width: 26.6667%;
            float: left;
            margin: 1.1111%;*/
            width: 240px;
            float: left;
            margin: 10px;
        }
        section {
            /*width: 73.3333%;*/
            width: 660px;
            float: right;
        }
    </style>
</head>
<body>
<div class="container">
    <aside>1111</aside>
    <section>22222</section>
</div>
</body>
</html>